13=-5/4a

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Solution for 13=-5/4a equation: 



13=-5/4a

We move all terms to the left:

13-(-5/4a)=0



Domain of the equation: 4a)!=0

a!=0/1

a!=0

a∈R



We get rid of parentheses

5/4a+13=0

We multiply all the terms by the denominator


13*4a+5=0

Wy multiply elements

52a+5=0

We move all terms containing a to the left, all other terms to the right

52a=-5

a=-5/52

a=-5/52

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